code: def _execute_chunk(cls, ctx, op):
      inp = ctx[op.input.key]
      ctx[op.outputs[0].key] = cls._duplicated(inp, op)
  
imports: import numpy
  from ...None import opcodes
  from ...core import OutputType
  from ...core.operand import OperandStage
  from ..utils import gen_unknown_index_value, hash_dataframe_on
  from ._duplicate import DuplicateOperand, validate_subset
label_desc: Use image node_id 11 for calling the DataFrameDuplicated obj's underlying member method code with example usage: obj._execute_chunk(cls, ctx, op) without return types